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1、PrestressedConcreteTechnology提纲：摘要：预应力混凝土的定义正文：预应力混凝土的应用、实例应用讨论：预应力混凝土的优点和缺点总结：预应力混凝土的发展的前景IntroductionPrestressedconcreteandreinforcedconcreteinprincipleareclearlydifferent.Inthedesignofthereinforcedconcretebeams,regardlessoftheconcretecanbeassumedthatthetensilestrength,forbendin
2、gmomentoftensioniscausedbyreinforcedtoresist,thetensionisthroughbetweenreinforcementandconcretebondingandpassedtothesteel.Forlargescalecrazeanddeformationfor,althoughthehighstrengthconcretehasgoodbonding,toagreatextentcanrestore;Butintheconcreteandsteelbondingbetweenpoorordinaryco
3、ncrete,isinfactcan'trecover.Ontheotherhand,intheprestressedconcrete,thepurposeofprestressedreinforcedbyrappingorthroughthespecialistheanchoragetoexertaforceconcrete,soallcanhavethefunctionofconcretestructure.Requirementsofprestressedsteelisusedtoproduceactivecomponentinadvancetoad
4、dload,andcrackinganddeformationinlargerextentcanberestored.AbstractInordertoavoidreinforcedconcretestructureoftheprematurefracture,makefulluseofhighstrengthsteelandhighstrengthconcrete,triedtointheconcretestructureorstructuresunderloadbeforeuse,throughtheforceapplied,makebythetens
5、ilestresscomponentsisreduced,andeveninpressurestressstateofconcretecomponent.Preloadingstressisusedtoreduceoroffsetloadcausedbytheconcretetensilestress,andthestructureofthecomponentsinthesmallertensilestresscontrolrange,andeveninthecompressionstate,todelaythegenerationofcrackincon
6、creteanddevelopment,soastoimprovetheanti-crackingperformancecomponentandrigidity.Maintext7Prestressedconcretecomponenttothemethodofpretensionedstressingandposttensioned.1.pretensionedstressingIntheconcretepouring,firstbysteelwiresteelstrandorwillbecomposedoftheprestressedtendonpul
7、ledtoaspecifiedstress,andtheanchorageanchorinapieratbothendspedestal,theninstallationtemplate,thestructure,steelandparts,andthenpouringconcreteandmaintenance.Whenconcreteafterthespecifiedstrength,relaxapieratbothendsofthetendons,throughthebondwillbetheprestressedconcreteandtension
8、toproducepreloadingstress.Amethod
